641270 has 16 divisors (see below), whose sum is σ = 1319328. Its totient is φ = 219840.

The previous prime is 641261. The next prime is 641279. The reversal of 641270 is 72146.

It is an interprime number because it is at equal distance from previous prime (641261) and next prime (641279).

It is a super-2 number, since 2×641270² = 822454425800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641279) by changing a digit.

641270 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4511 + ... + 4650.

It is an arithmetic number, because the mean of its divisors is an integer number (82458).

2⁶⁴¹²⁷⁰ is an apocalyptic number.

641270 is an abundant number, since it is smaller than the sum of its proper divisors (678058).

It is a weird number, because it is abundant, but not a pseudoperfect number.

641270 is a wasteful number, since it uses less digits than its factorization.

641270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9175.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 641270 is about 800.7933566158. The cubic root of 641270 is about 86.2343526890.

The spelling of 641270 in words is "six hundred forty-one thousand, two hundred seventy".